Colony » Colony Scout » Colony Scout OS

/*-

 * Copyright (c) 1982, 1986, 1993

 *        The Regents of the University of California.  All rights reserved.

 * (c) UNIX System Laboratories, Inc.

 * All or some portions of this file are derived from material licensed

 * to the University of California by American Telephone and Telegraph

 * Co. or Unix System Laboratories, Inc. and are reproduced herein with

 * the permission of UNIX System Laboratories, Inc.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *        @(#)tty.h        8.7 (Berkeley) 1/9/95

 */

#ifndef _SYS_TTY_H_

#define _SYS_TTY_H_

#include <sys/cdefs.h>

#include <sys/termios.h>

#include <sys/syslimits.h>

#define TTYQ_SIZE        MAX_INPUT

#define TTYQ_HIWAT        (TTYQ_SIZE - 10)

struct tty_queue {

        char        tq_buf[TTYQ_SIZE];

        int        tq_head;

        int        tq_tail;

        int        tq_count;

};

/*

 * Per-tty structure.

 */

struct tty {

        struct tty_queue t_rawq;        /* raw input queue */

        struct tty_queue t_canq;        /* canonical queue */

        struct tty_queue t_outq;        /* ouput queue */

        struct termios        t_termios;        /* termios state */

        struct winsize        t_winsize;        /* window size */

        struct event        t_input;        /* event for input data ready */

        struct event        t_output;        /* event for output completion */

        void (*t_oproc)(struct tty *);        /* routine to start output */

        device_t        t_dev;                /* device */

        int                t_state;        /* driver state */

        int                t_column;        /* tty output column */

        pid_t                t_pgid;                /* foreground process group. */

        task_t                t_sigtask;        /* task to dispatch the tty signal */

        int                t_signo;        /* pending signal# */

        struct dpc        t_dpc;                /* dpc for tty */

};

#define        t_iflag                t_termios.c_iflag

#define        t_oflag                t_termios.c_oflag

#define        t_cflag                t_termios.c_cflag

#define        t_lflag                t_termios.c_lflag

#define        t_cc                t_termios.c_cc

#define        t_ispeed        t_termios.c_ispeed

#define        t_ospeed        t_termios.c_ospeed

/* These flags are kept in t_state. */

#define        TS_ASLEEP        0x00001                /* Process waiting for tty. */

#define        TS_BUSY                0x00004                /* Draining output. */

#define        TS_TIMEOUT        0x00100                /* Wait for output char processing. */

#define        TS_TTSTOP        0x00200                /* Output paused. */

#define        TS_ISIG                0x00400                /* Input is interrupted by signal. */

__BEGIN_DECLS

int         tty_read(struct tty *, char *, size_t *);

int         tty_write(struct tty *, char *, size_t *);

int         tty_ioctl(struct tty *, u_long, void *);

void         tty_input(int, struct tty *);

int         tty_getc(struct tty_queue *);

void         tty_done(struct tty *);

void         tty_attach(struct tty *);

__END_DECLS

#endif /* !_SYS_TTY_H_ */